{"product_id":"square-d-lal34400mc1212-circuit-breaker","title":"Square D | LAL34400MC1212 | Circuit Breaker | 400A | 3-Pole | 480V","description":"\u003cdiv\u003e\n\u003cp\u003eSquare D introduces the LAL34400MC1212 circuit breaker—a precisely matched, high-capacity protective device designed for demanding 480V three‑phase systems. With a robust 400A rating across 3 poles, this breaker is built to safeguard critical industrial circuits while maintaining reliable power delivery in busy electrical rooms and distribution panels.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 400A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 480V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e LAL34400MC1212\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBrand lineage:\u003c\/strong\u003e Square D\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy this model stands out in practical terms:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eExact compatibility for maintenance and retrofit:\u003c\/strong\u003e The part number LAL34400MC1212 is the strongest reference for matching ratings and fit, reducing guesswork during repairs or upgrades.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDesigned for three-phase 480V systems:\u003c\/strong\u003e Ideal for industrial power distribution where three-phase feeders require solid overcurrent protection and clear isolation points.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReliability in replacements:\u003c\/strong\u003e Use it to replace a worn or failed unit without compromising existing protection schemes or panel coordination.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eUse cases and scenarios to consider:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eMaintenance swaps:\u003c\/strong\u003e Quick, field-proven replacement for aging breakers to minimize downtime after a fault or routine inspection.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRetrofit projects:\u003c\/strong\u003e Update legacy panels with a contemporary, compatible 400A 3‑pole solution that preserves safety margins and circuit protection.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNew or refurbished installations:\u003c\/strong\u003e Configure feeders and main lugs in 480V systems where a precise 400A, 3-pole protection device is required.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003ePractical guidance for ordering and installation:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eVerify fit and ratings first:\u003c\/strong\u003e Before purchasing, confirm that the LAL34400MC1212 aligns with your panel model, bus configuration, and intended load.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eUse the part number as the primary compatibility cue:\u003c\/strong\u003e Rely on LAL34400MC1212 to ensure the unit will drop into the same footprint and deliver the same protection characteristics as the original.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIn short, this Square D circuit breaker is a purpose-built choice for professionals managing 480V, three-phase distributions. Its 400A capacity, 3-pole arrangement, and exact part-number compatibility make it a dependable, straightforward solution for maintenance, retrofit, and replacement projects without compromising system protection.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46426355794082,"sku":"LAL34400MC1212","price":2010.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-lal34400mc1212-circuit-breaker-400a-3-pole-480v-691.webp?v=1789562349","url":"https:\/\/www.ampstate.com\/products\/square-d-lal34400mc1212-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}